//
//  Bird.h
//  DesignPattern
//
//  Created by ClassWizard on 16/3/9.
//  Copyright © 2016年 ClassWizard. All rights reserved.
//

#import <Foundation/Foundation.h>

@protocol BirdProtocol <NSObject>

- (NSString *)fly;

@end

@interface Bird : NSObject

- (NSString *)fly;

@end
